Story Cliche's that you hate the most?

I'm planning to start working on a novel soon. I have a basic story plot in my head so far, but I still need to bring it alive. I also still haven't picked all my characters, nor worked up ideas for all scenes, but before I start with that, I figured I would see what to avoid.It would be helpful if you could tell me which cliches to stay away from, whether in the plot itself or the ending or the characters' personality and behaviour.